Which choice explains a use of a Venn diagram? A. illustrates similarities and sizes only
B. graphs sizes and amounts using bars
C. illustrates ways things are similar and different
D. charts numbers using shapes
This is a science question choices did not say science so picked physics

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

How does an observation about an object differ from an inference about that object

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants